ltjfbery



UNITED sTATEs PATENT OFFICE.

GEO. F. LUFBERY, OF NEW YORK, N. Y.

MACHINE FOR MAKING PAPER BAGS.

Specification of Letters Patent No. 28,188, dated May 8, 1860.

To aZZ whom it may concern:

Be it known that I, Gr. F. LUFBERY, of the city, county, and State of New York, have invented certain new and useful Improvements in Machinery for Making Bags of Paper; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l, is a longitudinal vertical section of amachine constructed according to my invention. Fig. 2, is a rear elevation of the same. Fig. 3, is a plan of the same. Fig. 4, exhibits' the form in which the blanks of paper or other material of which the bags are to be made are cut before their introduction to the machine. Fig. 5, is a side view of one of the grippers, and its appendages, on a larger scale than the other figures.

Similar letters and numbers of reference indicate corresponding parts in the several figures.

My invention consists in certain novel contrivances which take a cut and partly folded blank from a pile print it and paste the parts which are to form the lap and conveying it toward the apparatus by which the lap is folded; also, in a certain novel arrangement of the lap folding apparatus, and the lap pasting apparatus, the lap folding apparatus, and the contrivance for conveying the partly folded and pasted blank, to the lap folding apparatus, also in the arrangement of a fixed needle in such relation to the apparatus by which the finished bag is thrown out of the folding apparatus, that the bags will be strung together by the act of throwing them out of said apparatus.

To enable others to make and use my invention I will proceed to describe its construction and operation.

A, is the main shaft of the machine arranged horizontally in bearings in standards B, B, erected upon a bed-plate or table C, which constitutes the base of the machine. This shaft carries a cylinder D, which serves the purpose of assisting to carry the partly folded blanks to the apparatus for folding the side laps, of pasting the side laps, and of printing the card of the merchant or trader, or any other superscription on the outside of the bag. The said shaft also carries a number of wipers for giving motion, the other parts of the machine and is furnished with a driving pulley E, to receive the belt from which it derives its own rotary motion.

a, a, are two grippers attached to the cylinder D, for the purpose of taking from a stationary inclined feed board F, substantially like that of a printing press, the partly folded blanks, which before having been deposited on the said feed board have been cut and folded as illustrated by Fig. 4 that is to say they have been cut to the form represented by the lines Z) ZJ, c c, LZ, e, f f, and then folded by hand, or other means, in the dotted line g, which is even with the edges f f, and at the middle of the lengt-h of the bag, to bring the part eZ, c, c, on the part b, b, e. The width between c c, is equal to or slightly less than the intended width of the bag, the fold g, forms the bottom of the bag, and the parts h, h, between the edges and c, constitute the side laps which have to be pasted and folded by the machine. The pieces thus folded are laid on the feed board F, with the parts c c CZ underneath, and the fold g, toward the cylinder. The two grippers a, a, are arranged in line with each other, at a distance apart, less than the two edges c, c, of the blanks each being arranged to turn on one of two pins z', which are attached to the cylinder, each within a recess j Z, in one of two raised bands D', D, which are formed around the cylinder, the axes of the said pins being parallel with the axis of the cylinder; and each of the said grippers has a spring la, coiled around its respective pin, and applied to it in such a manner as to tend to throw its point outward from the cylinder. Above the cylinder opposite the bands D, D, there are attached to a fixed bar Gr, two stationary arched plates H, H, which are concentric to the cylinder, and very near to the peripherical surfaces of the said bands, the front end of said plates being so arranged that the grippers will strike them just after passing the lower edge of the feed board, in their revolution with the cylinder, and so be caused to have their points thrown down over the edges Z, Z, of the recesses y' Z Z, and held there till the grippers pass from under the said plates. Every time the grippers pass around the edge of the feed board, the attendant who stands in front of the machine pushes the top blank of the pile in under them, and as they pass under the plates they seize it, be-

tween their points and the bands D', D', and carry itvaround with the cylinder inthedie rection'indicated by Vthe arrow shown on the latter in Fig. l. The external circumferencev of the bands D', D', should be equal to about.

twice the length of the bag.

Nearer to the ends of the cylinder-than the bands D', D', there vare formed upon thecylinder two raised illets'Dz, D2,'extending about half way around the cylinder, or as fararound as the length of the longestbagtobe made in 'the machine, the facesbf theyv said.;

fillets being concentric with the axis offthe cylinder, and formed even withthe .faces of the' bandszD', D', the said lletsbeing-at-,a

distance apartequal tothe distance between.1

the` two.edges-c, c, of the blank, and coin-V Inencing in line with the edges y', j, of the recesses y' Z, j Z, of the said bands and extend-,- ing fronirthence around thezcylinder inthe passing under two pressureVV rollers .K, VK, on

ashaft L, that is arrangedto rotate in bears ings above the cylinder. ,Y y s g At the middle of the length of the cylinder D, between the bands D', D', there is formed around it a broad concentrically raised band D3, the face of which is evenv with the faces of the bands D', D', and in this band between the fillets D2,D2,there is arranged the form of type m, for printing the bag, the impression being produced by the blank passing with the form under a roller M, on the shaft L, and the form being inked by an inking roller n, which is held by a frame N, arranged to vibrate upon fixed centers o, above the paste box and below the feed board, the said roller being supplied with ink froml a larger roller O, whose journals work in stationary bearings.

The roller n, is held out of contact withthe. cylinder and in contact with the roller O,

except while the form is passing it by means of two friction rollers 77 79 attached to the.

frame N, resting against the cylinder itself, but just as the form is arriving opposite the said rollers n, the rollers p, 79, drop into recesses g, g, shown dotted in Fig. l, provided in the cylinder to receive them, and the inking roller n, is forced into contact with the form by means of a spring r, which presses continually upon the frame N. The roller O, derives an intermittent rotary motion through a band s, from a pulley on the shaft I', of the paste rollers and so keeps up the supply of ink to the-rollerm/,fwhioh is f with a crank u, seegFig. l, which is fconnected- Aby a-link u' with the-lower armv of aleverpP, `whichworks1ona fixed fulcrum vshaft 1), which extends from one standard B,to the other. This lever P, has also connected `with its lowery arm a spring fw, whichl tends to draw'it-forward, and so lby its action on-the link u', and. crank fu, to 'holdup the fly Q,

is made-with prongs 00,1%, which'enter 'the spaces betweenrthebands and vfillets of the cylinder D,in-such a manner that the blank may pass over them as it is :carried around with thefcylinder. c The blank is liberated from the grippers before it arrives at the prongs of the lfly Q, by the escapevof the grippers from under the plates H, H, but continues to .adhere to the pasted fillets D2, D2, of the cylinder till its arrival over the Eprongs a, of the fly, after which the continued revolution of the cylinder causes it @to be stripped off the said fillets by the prongs and-topass straight down the vback of the fly, which continues stationary in contact with the cylinder t-ill the blank is very nearly stripped therefrom, vwhen by the action on Vthe upper end of the lever P, of a wiper e, carried by one of two wheels R, R', that are fast on the mainV shaft A,the said lever is caused through the agency of the link a', and crank'u, to throw it (the fly) down suddenly upon the horizontal folding bed S, which is elevated alittle above thev bed plate or table C, and so jto deposit the blank upon the said bed. The action of the wiper a, upon the lever P, is yonly momentary and as soon as the pasted and printed blank is deposited upon the folding bed, the said wiper escapes from the said leverand allows the spring fw, by its action on the said lever to throw the fly upward again into contact with the cylinder.

The width of the folding bed S, is exactly equal to theintended width of the finished bag, consequently as much narrower than the wider portion of the blank, as the width of the laps it, h. The said bed has hinged to its sides the two lap folders T, T, consisting of two straight flaps of wood or metal, which when the blank is deposited on the bed by the fly Q, are 4stationary in a nearly uprightposition,l only inclining slightly from each other as shown in Fig. 2, in which condition they are held by the springs 6, 6, against the against the back of the cylinder. v The part of the fly which comes'agai-nst the cylinderl fil blocks 7, 7, standing up from the table C, above the folding bed. The blank in being carried downward by the fly between t-hese folders has the laps 7L, 7L, turned up as shown in Fig. 2, where it is represented in blue color, and immediately after the fly Q, has been raised again the said folders are thrown over toward each other, and so made to fold over the laps lz., and press their pasted sides down on the part (l, c, c, of the blank thus completing the bag. This operation of t-he folders is produced by the action against their outer sides of two horizontal cams U, U, somewhat resembling bellcranks which are arranged to turn upon stationary pins 8, 8, secured in the blocks 7, 7, the said cams being brought into action on the folder by means of two wipers 10, 10, carried by the wheels R, R', on the main shaft, upon the upper end of two levers V, V, which are arranged to work on the fulcrum shaft c, and which have their lower ends connected by rods 11, 11, with the said cams. When the wipers 10, 10, have passed the levers V, V, which they do very quickly, the lower ends of the said levers are drawn forward again to move the cams out of the way of the folders by means of springs 12, 12, connecting them with the table C, and the folders are raised again by the springs 6, 6, to the position represented in Fig. 2.

During the above described operation, there lies flat upon the folding bed S, below the bag a fly W, substantially like Q, attached to a rockshaft 13, whose journals are fitted to fixed bearings 18, 18, arranged in rear of the folding bed. This fly W, is held down upon the bed, during such operation by a spring X, one end of which is connected with one of the standards B, and the other with a cord 14, which is wound partly around and secured to a roller 15 on the rockshaft 13, but after the folding has been performed and the folders T, T, have returned to the position shown in Fig. 3, is turned completely over in the oppositedirection, from the axis of its rockshaft, to throw the bag off the folding bed by the action of a wiper 16, attached to the wheel R, on the upper end of a lever Y, which is arranged to work upon the fulcrum shaft '0, and whose lower end is connected, by a cord 19, running around a guide pulley 17, with the roller 15, said cord passing around or partly around the said roller. Near the rockshaft l13, there is a hole 20, in the fly W, to receive a stationary needle 21, which has an eye near its point and is so arranged in the form of an arc concentric to the axis of the rockshaft 13, that it will pass through the said hole when the fly is swung back to throw the bag from the folding bed. In passing through the said hole the said needle also passes through the bag near the mouth thereof, and by keeping the needle threaded with twine, the bags are in this way strung together, in the manner generally required by merchants and traders.

The above described operations are all performed once, and one bag produced during every revolution of the main shaft A, and as soon as one hundred or any other number that it may be desired to string together for sale, have been produced, a bell 22, is rung by the action of a wiper 23, attached to a ratchet wheel 24, of the desired number of teeth which is moved one tooth for every revolution of the main shaft by means of a pawl 25, operated by an eccentric wrist carried by the said shaft.

lVhat I claim as my invention and desire to secure by Letters Patent is:

1, The cylinder D, constructed with bands and fillets D, D2, D3, and furnished with grippers substantially as herein described to perform the several operations of taking the blank from a pile and conveying it toward the lap folding apparatus, and of pasting the laps and printing it while on its way to such apparatus.

2. The grippers z', z', applied and operated by stationary arched plates H, H, in combination with springs lc, 7a, substantially as herein described.

3. The pronged fly Q, applied and operating in combination with the cylinder D, to strip the pasted blank from the paste llets of said cylinder substantially as herein described.

4. The arrangement of the folding table S, and lap folders T, T, the fly Q, and the pasting and printing cylinder D, substantially as herein described.

5. The fly W, applied in combination with the folding bed S, in the manner and for the purpose herein specified.

G. The stationary curved needle applied and operating in combination' with a hole in the fly W, or its equivalent by which the bags are thrown out of the folding apparatus substantially as and for the purpose specified.

GEORGE F. LUFBERY. Witnesses:

B. GIRoUX, M. M. LIVINGSTON. 

